net: mscc: ocelot: add missed parentheses around macro argument

Commit 2f187bfa ("net: ethernet: ocelot: remove the need for num_stats
initializer") added a macro that patchwork warned it lacked parentheses
around an argument. Correct this mistake.

Fixes: 2f187bfa ("net: ethernet: ocelot: remove the need for num_stats initializer")
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

include/soc/mscc/ocelot.h

@@ -106,7 +106,7 @@
 #define REG_RESERVED(reg)		REG(reg, REG_RESERVED_ADDR)
 
 #define for_each_stat(ocelot, stat)				\
-	for ((stat) = ocelot->stats_layout;			\
+	for ((stat) = (ocelot)->stats_layout;			\
 	     ((stat)->name[0] != '\0');				\
 	     (stat)++)